Improvement in grates



J. LEWISf A GRATE.

No.1'76f750fl I Patente@ May 2,-1876'.

N. PETER. H o-Lmi RA HER. WASMI UNITED STATES PATENT OFFICE.

VJASON LEWIS, OF PROVIDENCE, `RHODE ISLAND.

- IMPROVEMENT |N GRATVES.

Specification forming part of Letters Patent No. 176,750., 'lated May 2,1876; application filed September 23, 1875.

To all whom it may concern:

Be it known that I, JASON LEWIS, of the city and county of Providence,State of It ode Island, have invented certain new and usefulImprovements in Furnace-Graines; and

I do hereby declare that lthe following is a full, clear, and exactdescription vofthe same, which will enable others skilled in the art tomake and use the same, reference being had -to the accompanyingdrawings, forming part of this specication. Y

Figure 1 is a longitudinaljsection of my improved furnace-grate, throughthe center of the grate andthe handle. y Fig. 2 is atop view of thesame. 'Y

Similar letters of reference indicate corresponding parts.

'lhe invention consists inthe peculiar arrangement'of the severalparts,as is more fully set forth hereinafter.

In the drawings, a is .a projecting har cast on the grate, and providedwith the handle b, by which the grate is shaken, either by reciprocatingin and out, or by swinging from side to side. c c c areconcentric rings, having projections cast on the same, and bars, byWhich the several rings are united to the central hub d, where the graterests on the bearers, to which the same is secured bya central pin,

surrounded by a liange or hearing-surface, on v which it can be freelyswung from side to side; The bearers g, supporting the grate in thecenter, rest on the slide h by the lips e, so that they may slide in orout; and, as the grate is secured to the bearers by the central pin,when the handle b is pulled forward the grate and thebearers will slideforward on the slides hlt. The arm a rests within the slidef,

so thatwhen the handle b is moved from side to side the slide will movewith 4 the same, thus covering the slit through which the handle moves,and prevents the ashes from pass.-

ing through the slit into the room. lhe peculiar construction of thegrate, in which are a number of concentric rings, c c c, havingprojections cast on them and united to the central hub by bars, allowsconsiderable freedom for expansion and contraction under variations oftemperature, and insures a more thorough Ashaking out of the ashes fromthe tire. By casting the arm a and handle b in onepiece with the grate,the mislaying or loss l' ofthe same-now a usual occurrence-is pre-4vented,and also the time required toproperly insert the handle, andsecure the same safer,

whilethe whole can be cast with less labor'7 as Witnesses:

JOSEPH A. MILLER, IL. V. RoENWooD.

